EXAMPLES OF COIN ERRORS, PAPER MONEY ERRORS, BOOK ERRORS, ETC. MIGHT SHOW UP HERE.

Here is a very intriguing error.  This is a bonded pair (look closely at the top) of 1999 Lincoln Cents. 

It shows a very deep die cap and an off-center strike.   MS-63 Red is what NGC calls it.

Here is a special kind of error, a Broad Struck Lincon Cent.  The obverse was struck through a capped dye. 

 It was graded MS-64 Red by NGC.

Below is an amazing error.  It is a 1965 Broad Struck Nickel with obverse indent.

It was graded MS-64 by NGC.

An extremely nice 1937D 3 Legged Buffalo for an extremely nice price.  This is graded by NGC as MS-62.

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 Below is a No Date D Ike Dollar struck on a clad 50 cent planchet.  PCGS grades it as MS-64

Six Kennedy Halves struck on various planchets are shown below. 

Above is a no date half struck on a clad 10C planchet.  It was graded MS-63.  This is the last of the error halves.

An undated Kennedy Half on CU cent planchet.  MS-64 Brown.

 A 196? on a 5 cent planchet.

This is a 1965 Half struck on a quarter planchet. This one is a BU.

 This is a 1980P Half struck on a SBA $1 planchet.  It is cataloged as an AU-58.

A 1974P Half on a Taiwan $1 Planchet.

 The reverse of this 1992D Cent shows die scratches and a few slight gouges going from "...RICA", parallel to the columns, down to the "T" in CENT.  The white spot by the "O" is just a reflection.

This 1993P Dime shows a very small die crack throught the "I" in "DIME" to the bottom stem of the oak branch.

 Another die crack on a 1993 cent.  This one goes throught the C in CENT.  It was found in Circulation.

Check out this die crack through the "R" in AMERICA to the corner of the Memorial Building.  This coin was found in circulation.  Note how the clad copper suface has been interrupted at that point because of the crack.

 This 1991D Quarter shows a clipped planchet.  This was found in circulation also.

This 1987P shows an off-center strike.  Notice the Letters in LIBERTY fading out.

On the reverse it looks like a brockerage error.  The letters in AMERICA and DOLLAR are being cut off and the obvious incomplete letters in UNITED STATES are plainly visible. 

Notice also that a wire, or something like that, got in the way, interfering with the "A" in STATES. 

 Incidentally, this coin could have been entered in the "Found in Circulation" category as that is how it was found .